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#!/usr/bin/perl
# (C) Sergey Kandaurov
# (C) Nginx, Inc.
# Tests for upstream random balancer module.
###############################################################################
use warnings;
use strict;
use Test::More;
BEGIN { use FindBin; chdir($FindBin::Bin); }
use lib 'lib';
use Test::Nginx qw/ :DEFAULT http_end /;
###############################################################################
select STDERR; $| = 1;
select STDOUT; $| = 1;
my $t = Test::Nginx->new()
->has(qw/stream stream_upstream_zone stream_upstream_random/)->plan(12)
->write_file_expand('nginx.conf', <<'EOF');
%%TEST_GLOBALS%%
daemon off;
worker_processes 2;
events {
}
stream {
%%TEST_GLOBALS_STREAM%%
upstream u {
zone z 1m;
random;
server 127.0.0.1:8081;
server 127.0.0.1:8082;
}
upstream lc {
zone lc 1m;
random two;
server 127.0.0.1:8081;
server 127.0.0.1:8082;
}
upstream w {
zone w 1m;
random two least_conn;
server 127.0.0.1:8081;
server 127.0.0.1:8082 weight=2;
}
upstream mc {
zone mc 1m;
random;
server 127.0.0.1:8081 max_conns=2;
server 127.0.0.1:8082 max_conns=1;
}
upstream mc2 {
zone mc 1m;
random two;
server 127.0.0.1:8081 max_conns=2;
server 127.0.0.1:8082 max_conns=1;
}
upstream one {
random;
server 127.0.0.1:8081;
}
upstream two {
random two;
server 127.0.0.1:8081;
}
upstream zone {
zone z 1m;
random;
server 127.0.0.1:8081;
}
upstream ztwo {
zone z 1m;
random two;
server 127.0.0.1:8081;
}
upstream fail {
zone fail 1m;
random;
server 127.0.0.1:8096;
server 127.0.0.1:8083 down;
server 127.0.0.1:8082;
}
upstream fail2 {
zone fail2 1m;
random two;
server 127.0.0.1:8096;
server 127.0.0.1:8083 down;
server 127.0.0.1:8082;
}
proxy_connect_timeout 2;
server {
listen 127.0.0.1:8080;
proxy_pass u;
}
server {
listen 127.0.0.1:8083;
proxy_pass lc;
}
server {
listen 127.0.0.1:8084;
proxy_pass w;
}
server {
listen 127.0.0.1:8085;
proxy_pass mc;
}
server {
listen 127.0.0.1:8086;
proxy_pass mc2;
}
server {
listen 127.0.0.1:8087;
proxy_pass one;
}
server {
listen 127.0.0.1:8088;
proxy_pass two;
}
server {
listen 127.0.0.1:8089;
proxy_pass zone;
}
server {
listen 127.0.0.1:8090;
proxy_pass ztwo;
}
server {
listen 127.0.0.1:8091;
proxy_pass fail;
}
server {
listen 127.0.0.1:8092;
proxy_pass fail2;
}
}
EOF
$t->run_daemon(\&http_daemon, port(8081));
$t->run_daemon(\&http_daemon, port(8082));
$t->run();
$t->waitforsocket('127.0.0.1:' . port(8081));
$t->waitforsocket('127.0.0.1:' . port(8082));
###############################################################################
my @ports = my ($port1, $port2) = (port(8081), port(8082));
like(get(8080, '/'), qr/X-Port: ($port1|$port2)/, 'random');
like(get(8083, '/'), qr/X-Port: ($port1|$port2)/, 'random two');
my $s = get(8083, '/w', start => 1, sleep => 0.5);
my $r = get(8083, '/');
my ($p) = http_end($s) =~ /X-Port: (\d+)/;
like($r, qr/X-Port: (?!$p)/, 'random wait');
SKIP: {
skip 'long test', 3 unless $ENV{TEST_NGINX_UNSAFE};
is(parallel(8084, '/w', 3), "$port1: 1, $port2: 2", 'random weight');
is(parallel(8085, '/w', 4), "$port1: 2, $port2: 1", 'max_conns');
is(parallel(8086, '/w', 4), "$port1: 2, $port2: 1", 'max_conns two');
}
# single variants
like(get(8087, '/'), qr/X-Port: $port1/, 'single one');
like(get(8088, '/'), qr/X-Port: $port1/, 'single two');
like(get(8089, '/'), qr/X-Port: $port1/, 'zone one');
like(get(8090, '/'), qr/X-Port: $port1/, 'zone two');
like(many(8091, '/', 10), qr/$port2: 10/, 'failures');
like(many(8092, '/', 10), qr/$port2: 10/, 'failures two');
###############################################################################
sub get {
my ($port, $uri, %opts) = @_;
my $s = IO::Socket::INET->new(
Proto => 'tcp',
PeerAddr => '127.0.0.1',
PeerPort => port($port),
)
or die "Can't connect to nginx: $!\n";
http_get($uri, socket => $s, %opts);
}
sub many {
my ($port, $uri, $count, %opts) = @_;
my %ports;
for (1 .. $count) {
if (get($port, $uri) =~ /X-Port: (\d+)/) {
$ports{$1} = 0 unless defined $ports{$1};
$ports{$1}++;
}
select undef, undef, undef, $opts{delay} if $opts{delay};
}
my @keys = map { my $p = $_; grep { $p == $_ } keys %ports } @ports;
return join ', ', map { $_ . ": " . $ports{$_} } @keys;
}
sub parallel {
my ($port, $uri, $n) = @_;
my %ports;
my @s = map { get($port, $uri, start => 1, sleep => 0.1) } (1 .. $n);
for (@s) {
my $r = http_end($_);
if ($r && $r =~ /X-Port: (\d+)/) {
$ports{$1} = 0 unless defined $ports{$1};
$ports{$1}++;
}
}
my @keys = map { my $p = $_; grep { $p == $_ } keys %ports } @ports;
return join ', ', map { $_ . ": " . $ports{$_} } @keys;
}
###############################################################################
sub http_daemon {
my ($port) = @_;
my $server = IO::Socket::INET->new(
Proto => 'tcp',
LocalHost => '127.0.0.1',
LocalPort => $port,
Listen => 5,
Reuse => 1
)
or die "Can't create listening socket: $!\n";
local $SIG{PIPE} = 'IGNORE';
while (my $client = $server->accept()) {
$client->autoflush(1);
my $headers = '';
my $uri = '';
while (<$client>) {
$headers .= $_;
last if (/^\x0d?\x0a?$/);
}
$uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;
if ($uri eq '/w') {
Test::Nginx::log_core('||', "$port: sleep(2.5)");
select undef, undef, undef, 2.5;
}
if ($uri eq '/close' && $port == port(8081)) {
next;
}
Test::Nginx::log_core('||', "$port: response, 200");
print $client <<EOF;
HTTP/1.1 200 OK
Connection: close
X-Port: $port
OK
EOF
close $client;
}
}
###############################################################################
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